Hey @cdkcurtis,
Thanks for reaching out and welcome to the Community!
It's currently not possible to play music from the same account on different devices simultaneously. For your particular setup it would be best to register one of the Premium Family subaccounts in the Google Home app and use collaborative playlists so they can be accessible from all accounts on the plan.
We hope this helps. Let us know if you have any other questions.
Take care,
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